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Jack Schaffner

PROFILE

Jack Schaffner

Jack Schaffner developed and maintained core multiplayer systems for the easy-games/airship and airship-testbed repositories, focusing on reliable real-time networking, server-authoritative gameplay, and cross-platform deployment. He engineered deterministic, tick-based simulation and lag compensation to ensure smooth state synchronization and resilient player experiences under high latency. Using C#, TypeScript, and Unity, Jack refactored character controllers, implemented robust command prediction, and optimized network buffering for both desktop and mobile environments. His work included build automation for Linux, macOS, and iOS, as well as modular API design and error handling, resulting in scalable, maintainable code that improved gameplay stability and developer productivity.

Overall Statistics

Feature vs Bugs

79%Features

Repository Contributions

380Total
Bugs
36
Commits
380
Features
135
Lines of code
253,766
Activity Months12

Work History

October 2025

17 Commits • 7 Features

Oct 1, 2025

October 2025 monthly summary focusing on delivering reliability, scalability, and cross-platform readiness across the Airship suite. Key emphasis was on stabilizing gameplay networking, refining input fidelity for server-authoritative modes, and expanding build tooling to reduce friction when targeting Linux/macOS and iOS. The work delivered business value by reducing latency-related prediction errors, preventing data loss, and enabling broader platform support for faster iteration and deployment.

September 2025

25 Commits • 7 Features

Sep 1, 2025

September 2025 was focused on stability, reliability, and UI/network quality improvements across the airship family. Key work centered on robust shutdown workflows, stable command handling, and cleaner UI/type assets, with notable gains in startup reliability and rendering fidelity. The changes reduce race conditions, prevent duplicate shutdowns in Agones-enabled environments, and improve user experience during server transfers and avatar rendering. Technical achievements span async sequencing refinements, dynamic networking adjustments, and observability enhancements that underpin safer deployments and smoother gameplay.

August 2025

43 Commits • 19 Features

Aug 1, 2025

August 2025 performance summary for the airship projects. Delivered core gameplay quality improvements, networked state visibility, and lifecycle stability across easy-games/airship and easy-games/airship-testbed. Focused on business value through enhanced player experience, multiplayer reliability, maintainability, and better debugging/observability. Demonstrated strong cross-repo collaboration, robust error handling, and scalable typing support for client-server interactions.

July 2025

50 Commits • 23 Features

Jul 1, 2025

Month: 2025-07 — This period delivered stability and measurable performance improvements across the Airship projects, with a clear focus on startup reliability, networking latency, cross-server workflows, and enhanced user experience. Key features and architecture improvements were shipped, alongside targeted bug fixes that reduced drift, improved stability in editor and spectating modes, and strengthened build and deployment processes. The work contributes to a more robust gameplay experience, lower operational risk, and faster iteration cycles for new features. What I delivered by area: - Startup and UI stabilization: cleanup of debug paths, removal of leftover traces, and disabling UI during initialization to prevent partial renders and startup failures. - Cross-subsystem consistency: normalization of LookVector sources and optimization to avoid duplicate position calculations, improving accuracy and reducing redundant work. - Latency, buffering, and timing backbone: enhanced buffering, refined send intervals, corrected timing with fixed delta times, and improved RTT calculations to deliver smoother gameplay under high variance conditions. - Connectivity and cross-server workflows: dialed-in connectivity, server transfer capabilities, environment checks, and improved token/header handling to support resilient cross-server experiences. - Visual fidelity and UX: improvements to ragdoll stability, rotation smoothing, orbit camera interactions, and join-party UI behavior to deliver a more polished player experience. Impact and business value: - Reduced startup churn and initialization errors, enabling faster onboarding and improved first-run experiences for players. - Lower latency and more stable command processing, delivering smoother interactions in high-jitter and resimulation scenarios. - Stronger cross-server orchestration enabling reliable cross-server gameplay flows, transfers, and region-aware behavior. - Higher visual fidelity and UX quality contributing to lower player drop-off and improved perception of product quality. Technologies and skills demonstrated: - Real-time networking optimization (buffering, tick timing, fixed delta time, RTT handling) - LookVector normalization, vector math, and position calculation optimizations - Unity-based subsystem integration (OnTick, pooled I/O, resim stability, camera/character interactions) - Build and deployment improvements, environment checks, Steam integration, and authentication networking - Debug code cleanup, logging discipline, and documentation practices

June 2025

48 Commits • 15 Features

Jun 1, 2025

June 2025 across easy-games/airship and easy-games/airship-testbed focused on stabilizing core simulation, improving player control, and strengthening observability. Implemented a tick-based simulation for deterministic replays, refined jump and bot control, fixed critical bugs affecting simulation state and data integrity, and introduced refactors that improve maintainability and performance. These workstreams delivered measurable business value: more reliable multiplayer experiences, faster debugging, and a scalable architecture for future features.

May 2025

34 Commits • 12 Features

May 1, 2025

May 2025 Monthly Summary: Implemented a comprehensive networked gameplay overhaul across airship and its testbed, delivering resilient latency handling, improved input/view stability, and leaner code paths. Enhancements focused on business value: smoother multiplayer experience, more reliable server reconciliation, and reduced maintenance overhead through cleaner event handling and build configurations. The work reduces desync, speeds up release cycles, and lays groundwork for future QoS improvements.

April 2025

37 Commits • 9 Features

Apr 1, 2025

April 2025 performance summary for easy-games/airship-testbed and easy-games/airship. Focused on shipping server-authoritative features, lag compensation, observability, and diagnostics to improve security, predictability, and performance under high latency. Delivered a mix of new capabilities, stability fixes, and scripting support across two repos, enabling safer server-driven gameplay and faster debugging.

March 2025

51 Commits • 14 Features

Mar 1, 2025

March 2025 performance summary for the airship initiative. Delivered robust command processing, prediction enhancements, and state synchronization across airship-testbed and airship, with a clear path to improved reliability and throughput in live sessions. Key outcomes include authoritative end-state tracking, protection against input replay, reduced memory leaks and resims, and improved client/resims command end handling. Strengthened networked state diagnostics and type-safe state handling, along with a streamlined settings/prefab pipeline and code cleanliness efforts.

February 2025

44 Commits • 16 Features

Feb 1, 2025

February 2025 performance summary across two repositories (easy-games/airship-testbed and easy-games/airship). Delivered a robust networked simulation foundation with client-authoritative networking, server authentication, and initialization improvements, enabling safer state synchronization and scalable multiplayer features. Implemented lag compensation and resimulation to reduce desync risk, while refactoring movement/animation into a modular architecture. Modernized prefabs and project configuration for streamlined AirshipCharacter/server-auth integration, and introduced Mirror-based networking optimizations with update-rate tuning. Established a dedicated network-testing environment to accelerate QA, performance tuning, and tooling for observer timing. Result: improved reliability, maintainability, and business value through safer networking, modular design, and faster feature delivery.

January 2025

14 Commits • 5 Features

Jan 1, 2025

January 2025 performance summary focusing on delivering robust concurrency controls, latency-aware improvements, network diagnostics, and rendering reliability across two repositories (easy-games/airship-testbed and easy-games/airship).

November 2024

16 Commits • 7 Features

Nov 1, 2024

In 2024-11, delivered foundational enhancements for scalable game server fleets, real-time group collaboration, improved matchmaking configuration retrieval, and robust profiling data workflows. These changes strengthen operational scalability, player experience, and developer productivity across the Easy Games suite.

October 2024

1 Commits • 1 Features

Oct 1, 2024

2024-10 Monthly Summary for developer performance review. Delivered a real-time matchmaking enhancement in easy-games/airship-testbed, enabling live updates of group status and setting the foundation for more responsive multiplayer experiences. The work focused on implementing an event-driven signaling mechanism and socket-based propagation to clients, improving latency and overall user satisfaction.

Activity

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Quality Metrics

Correctness85.6%
Maintainability85.0%
Architecture81.0%
Performance78.8%
AI Usage22.0%

Skills & Technologies

Programming Languages

C#C++JSONJavaJavaScriptLuaLuauPNGShaderLabTypeScript

Technical Skills

3D MathAPI DesignAPI DevelopmentAPI IntegrationAPI RefactoringAlgorithm ImplementationAnimation SystemsAsset ManagementAsynchronous ProgrammingAttribute UsageBackend DevelopmentBackend IntegrationBinary Data HandlingBit ManipulationBot Development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

easy-games/airship

Nov 2024 Oct 2025
11 Months active

Languages Used

C#PNGUnitymetaLuauShaderLabTypeScriptUnityScript

Technical Skills

API DevelopmentAPI IntegrationAsynchronous ProgrammingBackend DevelopmentCode CleanupDebugging

easy-games/airship-testbed

Oct 2024 Oct 2025
12 Months active

Languages Used

TypeScriptC#LuauUnityUnity AssetUnity PrefabYAMLJSON

Technical Skills

API IntegrationClient-Server CommunicationEvent HandlingReal-time UpdatesAPI DevelopmentAnimation Systems

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